Risk

High

Date Discovered

July 9, 2013

Description

Microsoft Silverlight and Microsoft .NET Framework are prone to a remote code-execution vulnerability.
Successful exploits will allow an attacker to execute arbitrary code within the context of the application. Failed exploit attempts will likely result in a denial-of-service condition.

Technologies Affected

Avaya CallPilot

Avaya CallPilot 4.0

Avaya CallPilot 4.0.1

Avaya CallPilot 5.0

Avaya CallPilot 5.0.1

Avaya Conferencing Standard Edition 6.0

Avaya Conferencing Standard Edition 6.0 SP1

Avaya Conferencing Standard Edition 6.0.1

Avaya Conferencing Standard Edition 7.0

Avaya Meeting Exchange - Client Registration Server

Avaya Meeting Exchange - Client Registration Server 5.0

Avaya Meeting Exchange - Client Registration Server 5.0.1

Avaya Meeting Exchange - Client Registration Server 5.2

Avaya Meeting Exchange - Client Registration Server 5.2.1

Avaya Meeting Exchange - Client Registration Server 6.0

Avaya Meeting Exchange - Recording Server

Avaya Meeting Exchange - Recording Server 5.0

Avaya Meeting Exchange - Recording Server 5.0.1

Avaya Meeting Exchange - Recording Server 5.2

Avaya Meeting Exchange - Recording Server 5.2.1

Avaya Meeting Exchange - Recording Server 6.0

Avaya Meeting Exchange - Streaming Server

Avaya Meeting Exchange - Streaming Server 5.0

Avaya Meeting Exchange - Streaming Server 5.2

Avaya Meeting Exchange - Streaming Server 6.0

Avaya Meeting Exchange - Web Conferencing Server 5.0

Avaya Meeting Exchange - Web Conferencing Server 5.0.1

Avaya Meeting Exchange - Web Conferencing Server 5.2

Avaya Meeting Exchange - Web Conferencing Server 5.2.1

Avaya Meeting Exchange - Web Conferencing Server 6.0

Avaya Meeting Exchange - Webportal 5.0

Avaya Meeting Exchange - Webportal 5.0.1

Avaya Meeting Exchange - Webportal 5.2

Avaya Meeting Exchange - Webportal 5.2.1

Avaya Meeting Exchange - Webportal 6.0

Avaya Messaging Application Server 4

Avaya Messaging Application Server 5

Avaya Messaging Application Server 5.0

Avaya Messaging Application Server 5.0.1

Avaya Messaging Application Server 5.2

Avaya Messaging Application Server 5.2.1

Avaya Messaging Application Server MM 1.1

Avaya Messaging Application Server MM 2.0

Avaya Messaging Application Server MM 3.0

Avaya Messaging Application Server MM 3.1

Microsoft .NET Framework 2.0 SP2

Microsoft .NET Framework 3.5

Microsoft .NET Framework 3.5.1

Microsoft .NET Framework 4.0

Microsoft .NET Framework 4.5

Microsoft Silverlight 5.0

Recommendations

If global access isn't needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of successful exploits.

Run all software as a nonprivileged user with minimal access rights.

To reduce the impact of latent vulnerabilities, always run nonadministrative software as an unprivileged user with minimal access rights.

Do not follow links provided by unknown or untrusted sources.

Attackers could exploit this vulnerability by enticing a user to visit a malicious website. Do not follow links provided by sources of questionable integrity.

Set web browser security to disable the execution of script code or active content.

Disable support for script code and active content within a client browser to reduce the chances of a successful exploit. Note that this mitigation tactic might adversely affect legitimate websites that rely on the execution of browser-based script code.

Implement multiple redundant layers of security.

Since this issue may be leveraged to execute code, we recommend memory-protection schemes, such as nonexecutable stack/heap configurations and randomly mapped memory segments. This tactic may complicate exploits of memory-corruption vulnerabilities.

Updates are available. Please see the references or vendor advisory for more information.

Disclaimer
The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.

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